Behavior of Liquid Phase Generation of High Phosphorus Oolitic Hematite during Sinter

In order to better comprehend the characteristics during sintering of high-phosphorus hematite and to promote the development and utilization of high-phosphorus iron ore. Combined with FactSage thermodynamic software simulation, this essay provides an all-round analysis in the liquid phase formation behavior of iron ore powder was described by using the X-ray diffract meter (XRD) and Melting point and speed locator during sintering process. The main oxide content was determined by normalized treatment according to the chemical composition of iron ore powder. Using FactSage 7.0 thermodynamic software and data to simulate, the result showed the liquidus temperature of high-phosphorus iron ore was above 1350 degrees C when the binary alkalinity was 3.0. With the ratio of the amount of high-phosphorus iron ore increasing, the liquid phase increased more quickly when the temperature was higher than 1250 degrees C. Using the Melting point and speed locator to verify the approximate test: by changing the ratio between high phosphate iron ore powder and Australian powder, it can be seen that the experimental results are in accordance with the simulation results: with the ratio of high phosphorus iron ore powder increases, The melting temperature of mixture increased, so was the melting rate. The sintered products of high phosphorus iron ore powder were analyzed by XRD, so that the main bonding phase was calcium lron oxide and calcium aluminum lron silicate. It is of great guiding significance for optimizing the sintering ore distribution and improving the sinter production and quality.